Euclid, Elements, volume 2, page 188

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DEFINITIONS.

1

Similar rectilineal figures are such as have their angles severally equal and the sides about the equal angles proportional.

2

[Reciprocally related figures. See note.]

3

A straight line is said to have been cut in extreme and mean ratio when, as the whole line is to the greater segment, so is the greater to the less.

4

The height of any figure is the perpendicular drawn from the vertex to the base.

5

Euclid. Euclid's Elements. Sir Thomas Little Heath. New York. Dover. 1956.

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Euclid, Elements
Thomas L. Heath, Sir Thomas Little Heath, Ed.

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DEFINITIONS.

1

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3

4

5

Euclid, Elements Thomas L. Heath, Sir Thomas Little Heath, Ed.

This text is part of:

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Table of Contents:

DEFINITIONS.

1

2

3

4

5

Euclid, Elements
Thomas L. Heath, Sir Thomas Little Heath, Ed.